Name	Kate O'Neill
Height	5 ft 4 in
Naionality	American
Date of Birth	29-July-1980
Place of Birth	Milton, MA, U.S.
Famous for	Long Distance Runner

Kate O'Neill is an American long-distance runner from Milton, Massachusetts. She represented the United States in the 2004 Summer Olympics, competing in the 10,000 metres. Currently, she is primarily a marathoner. O'Neill ran cross country and track and field at Yale University, where she was a three-time NCAA runner-up in Cross Country, 5000 m (indoor), and 10,000 m (outdoor). O'Neill earned All-American honors in both Cross Country and Outdoor track. Her twin sister, Laura, was also an All-American at Yale.

In 2004, after setting personal records in the 10,000 m and 5000 m, O'Neill finished third in the Olympic 10,000 m trials with a time of 32:07.25. This qualified her for the 2004 Summer Olympics. In Athens, she finished 21st with a time of 32:24.04. O'Neill later turned her focus to longer distance events, with an emphasis on the marathon. She was coached by Terrence Mahon, who coaches notable American marathoners Deena Kastor, Ryan Hall, and Jen Rhines. She had a strong marathon debut at the Chicago Marathon, finishing third with a time of 2:36:15. In January 2008, she won the 2008 USA half-marathon championship (1:11:57) at the Aramco Houston Half-Marathon. O'Neill was a favorite at the 2008 U.S. Olympic Marathon Trials, but a knee injury forced her to drop out at mile 21. In 2009 O'Neill trained in Palo Alto, California, and was the first American finisher at the 2009 London Marathon, with a time of 2:34:48.

O'Neill married former Stanford Cardinal runner Adam Tenforde on November 20, 2010. The couple adopted Taz, a 3 year-old abandoned poodle-Maltese mix, in the summer of 2010. In April, 2010 O'Neill began a part-time position with runcoach to share her running expertise with recreational runners across the country. She moved on to an expanded role in Fall of 2010 and now manages the customer experience for the organization.